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Cu-Ag/hydrotalcite catalysts for dehydrogenative cross-coupling of primary and secondary benzylic alcohols

机译：用于初级和二级苄醇的脱氢交叉偶联的Cu-Ag /水滑石催化剂

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摘要

The development of new and inexpensive heterogeneous catalysts for direct C-C cross-coupling of primary and secondary alcohols is a challenging goal and has great importance in academic and industrial sectors. In this work Cu-Ag/hydrotalcite (Cu-Ag/HT) catalysts were prepared and tested for their impact on this cross-coupling. The effect of supports, including MgO, gamma-Al2O3 and HT with different Mg : Al molar ratios, was investigated. It was found that the acidic or basic properties of the supports affected product selectivity. The roles of Cu and Ag sites in the cross-coupling were also investigated with the prepared Cu-Ag/HT catalyst demonstrating high activity and selectivity for the reaction. The yield-to-target product of beta-phenylpropiophenone reached 99% after 1 h under optimum reaction conditions. The stability in air and reusability studies show that Cu-Ag/HT can be stored for 6 days and can be used five times without apparent deactivation, respectively.
机译：用于初级和二次醇的直接C-C交叉偶联的新且廉价的异质催化剂的发展是一个具有挑战性的目标，并且在学术和工业部门方面具有重要意义。 在该工作中，制备Cu-Ag /水滑石（Cu-Ag / HT）催化剂并测试它们对该交叉偶联的影响。 研究了载体的作用，包括MgO，γ-Al2O3和HT具有不同Mg：Al摩尔比的HT。 发现酸性或基本性质受影响影响产品选择性。 还研究了制备的Cu-Ag / HT催化剂的交叉偶联中Cu和Ag位点的作用，所述Cu-Ag / HT催化剂表现出高活性和反应选择性。 在最佳反应条件下1小时后，β-苯基丙酮的产量达到靶向产物达到99％。 空气和可重用性研究的稳定性表明，Cu-Ag / HT可以储存6天，并且可以分别使用五次而不明显去激活。

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  • 来源
    《RSC Advances》 |2016年第29期|共11页
  • 作者

    Xu Jin; Yue Hongmei; Liu Sheng; Wang Hanfei; Du Yuqun; Xu Chunli; Dong Wensheng; Liu Chunling;

  • 作者单位

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

    Shaanxi Normal Univ Minist Educ Key Lab Appl Surface &

    Colloid Chem Xian 710119 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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